Global Advanced Research Journal of Geology and Mining Research
February 2013 Vol. 2(1), pp 015-026
Copyright © 2013 Global Advanced Research Journals


Full Length Research Paper

Natural hazards along the Bamenda escarpment and its environs: The case of landslide, rock fall and flood risks (Cameroon volcanic line, North-West Region)

Guedjeo C.S.1, Kagou Dongmo A.1*, Ngapgue F.2 Nkouathio D. G.1, Zangmo Tefogoum G.1, Gountié Dedzo M.1 and Nono A.1

1Department of Earth Sciences, Faculty of Sciences, University of Dschang, PO Box 67, Dschang, Cameroon.
2Département de Génie Civil, IUT Fotso-Victor, Université de Dschang BP 134 Bandjoun

*Corresponding authors Email: kagoudongmo@yahoo.fr

Accepted 07 January 2012

Abstract

Bamenda town is situated on the North Northwest slope of the Bamenda Volcano (2621m) which is a stratovolcano situated along the Cameroon Volcanic Line precisely between Mount Bambouto (2740m) and Mount Oku (3011m). The general morphology shows the presence of an escarpment of about 150m high, which separates Bamenda town into Up Station and Down Town areas. Rapid population increase in the town of Bamenda (500,000 inhabitants) has pushed the inhabitants to settle along the slopes of the Bamenda Mountain and close to river channels thereby exposing themselves to landslide, rock fall and flood hazards, with negative environmental and socioeconomic impacts. These hazards usually occur during the rainy season and are provoked by natural and anthropogenic factors. The area consists of volcanic (ignimbrites, trachytes and dolerites) and plutonic (granites and gneisses) rocks. Geotechnical analysis of the soils shows that the soils have low bulk density (1.32-1.59), low specific density (2.20-2.58); high porosity (47.92-64.28 %); water content exceeds 35.2%, and predominance of fine grain particles. Atterberg limits indicate that the soils are plastic in nature. Cohesion is low (2.60-7.20 kPa) the angle of internal friction values vary from 25.5 to 28. These parameters indicate that the soils are predisposed to landslides. The model employed in realizing the risk maps uses parameters such as; slope, type of material, nature of river, the presence of rocks and/or escarpment and influence of geotechnical parameters. The obtained risk maps indicate settlement areas at risk. This approach can assist in town planning, risk mitigation, environmental and civil protection.

Keywords: hazards, floods, rock fall, landslide, escarpment, risk maps and Bamenda volcano.

 

Related Articles


Reviews
Sunday Nwite C.
Strategies of Environmental Risk Management in Nigeria
Glo. Adv. Res. J. Geol. Mining Res. January 2014 Vol: 3(1): - [Abstract] [Full Text - PDF] (80 KB)
Abd El-Aleem Saad Soliman Desoky
Non-Infectious Diseases caused by The Risk of Climate Change on Earth
Glo. Adv. Res. J. Geol. Mining Res. October 2017 Vol: 6(10): - [Abstract] [Full Text - PDF] (114 KB)
Original Research Articles
M.B. Dastagiri and L. Bhavigna
Planet Agriculture: Global Commons Natural resources, Climate change, Models & Vision to Feed Hungry Planet
Glo. Adv. Res. J. Geol. Mining Res. November 2019 Vol: 8(10): - [Abstract] [Full Text - PDF] (241 KB)
Shehla Noreen, Atif Kamran and Asma Naeem
Foliar application of Zinc to improve growth, yield and grain content in rice (Oryza sativa L.)
Glo. Adv. Res. J. Geol. Mining Res. August 2019 Vol: 8(7): - [Abstract] [Full Text - PDF] (1,103 KB)
Rehema T. Mdendemi, Susan R. Gwelema, Tiberio Mdendemi and Basil Msuha
Environmental Effects of Urban Livestock Keeping: Which Types of Livestock Pose more Serious Problems?
Glo. Adv. Res. J. Geol. Mining Res. January 2019 Vol: 8(1): - [Abstract] [Full Text - PDF] (485 KB)
Makori EM, Thuo JK, Kiongera FN, Muchilwa D
Assessment of the impact of occupational health and safety programmes on employee productivity of manufacturing firms in western province, Kenya.
Glo. Adv. Res. J. Geol. Mining Res. October 2013 Vol: 2(10): - [Abstract] [Full Text - PDF] (351 KB)

Current Issue

Viewing Options

View Full Article - PDF
Download Full Article - PDF

Search for Articles

Guedjeo CS on Google Scholar
Guedjeo CS on Pubmed
Kagou Dongmo A on Google Scholar
Kagou Dongmo A on Pubmed
Ngapgue F Nkouathio DG on Google Scholar
Ngapgue F Nkouathio DG on Pubmed
Zangmo Tefogoum G on Google Scholar
Zangmo Tefogoum G on Pubmed
Gountie Dedzo M on Google Scholar
Gountie Dedzo M on Pubmed
Nono A on Google Scholar
Nono A on Pubmed

Statistics

Viewed 2890
Printed 365
Downloaded 2510
Powered By iPortal Works